Cast-steel bolster for railway-car trucks.



CAST STEEL BOLSTEH FOR RAILWAY CAR TRUCKS: APPLICATION FILEDFEB-26.1914.

Patented. Dee. 11,1917.

W 24 2L? ,3 E

i JOHN nocoNNon,` or onroAedinmnois AssreNon frornA'r'r ANn Lnronwon'rn`ooi/IrANv, or BUFFALO, Nnw YORK, A CORPORATION or NEW YORK.

- igienici.

CAST-STEEL noteren non aAiLwAjif-OAR `rnUoKs.` i

Tojall 'whom z't may concern f 'l Be it known that I, J orIN F. OCONNOR,a citizen of the United States, residing in Chicago, in the countyofCook and State of `Illinois, have invented a new and usefulImprovement in Cast-Steel Bolsters forRailway-Car Trucks, of which thefollowing isa speciiication.` u

This invention relates to improvements in cast steel bolsters and moreparticularly to caststeel bolsters for railway cartrucks. j Gbje'cts ofthe invention are to providea bolster which comprises two members oflike Ill5 construction and each ofwhich may becast and moldedfrom thesame pattern; to provide a cast twopart'bolster each of which issubstantially channel-shaped in cross section from end to end; and toprovide atwo- `part vbolster having integral means thereon adapted toprevent sliding movement therebetweenunder bending strains. g

The invention furthermore consists in the improvements "inthe parts anddevices and in the novel combination of the parts and devices as hereinshown, described or claimedL," Y j In the drawingforming apart of thisspecification Figure 1 is a'top plan view of a bolster embodying myimprovements. Fig. 2 is a side elevation of the structure shown in Fig.1, and Figs'. 3 and 4 are enlarged, vertical sectional views takenontlie lines 3-3 and Llc-*4, respectively, of Fig. 2. y u In saiddrawing, the bolster is designated generally by the reference A and the`same as shown, comprises two members B B of like construction, each ofwhich is a steel casting. Each member B is substantially channel-shapedin cross section from end to end, as shown most clearly in Figs. 3 and1, and has a vertical web 10, upper flange 11 and lower flange 12, theupper flange 11 having a central horizontal portion 13, downwardly andoutwardly inclined portions 14: and horizontal end portions 15. Thelower flange 12 of each member B has a short horizontal central portion16, upwardly and outwardly inclined portions 17 and horizontal endportions 18. Each member B is provided with a plurality of verticallyeXtending strengthening ribs 19 on its inner side, guiding ribs 2O atits ends, and integral side bearing brackets 21. The upper and loweranges 11 and 12 of each member of the bolster, at their end portions 15and 18 are Specification of Letters lli'uatentl..A Pttqgdl Digg, :Il jl,191'?,

Application med February 2e, 1914*. serial No. $21,299. f

provided with interengaging alternately arranged. projections"22,22,said projections beingbeveled in plan view as shown in Fig. 1` and alsoinvertical section as shown at 23 inFig. 3 for a `purpose hereinafterspecified. The two 41n`.embers B are fitted together as shown in Fig. 1and aresecurely heldtogether by `rneansfof transverselyfextendi headedrivets A24 at the ends thereof. f y 1AByproviding the interengagingprojections 22, 22 `at" 'the endsof the'bolster members, the same arepreventedifrom relative longitudinalI movement or slippage when anybending forces are applied to thebolster at the center thereof. i

` The beveled ends of the proj ectionsh22 and the beveled faces betweenthem interengage to draw the parts tightlyk together, tending to wedgethe flanges of one partor 4member between the flanges of the other partor member, the parts being, however, suiiiciently stiff to prevent theflanges of one side from entering actually between the flanges of theotherf The upper and llower flanges of the channel-shaped members arecutaway Iat their center, as shown at 25, -to receivertheking pin as willbe understood,the usual center bearing plate being indicated in dottedlines at 26 in Figs. 2 and 4.

From the preceding seen thatthebolster which I have `provided is ofexceedingly strong, rigid construction and may be easily andcheaplycast. f' Although I have herein shown and described what I now considerthe preferred embodiment of my improvements, yet it will be understoodthat various changes and modiiications may be made without departingfrom the spirit of the invention, and all such changes and modificationsare contemplated as come within the scope of the claims appened hereto.

It will be noted that with the type of bolster which I have designed,the portions 14, 14 are placed under compression and the portions 17, 17under tension when the bolster is in service and the members 19, 19 actas struts between said portions lll and 17. With this construction amore rigid bolster is obtained than in those types of cast steelholsters hitherto used wherein the upper and lower members of thebolsters are curved. With this latter construction, the curved portionsunder compression tend to buckle description it'will be or bulgeoutwardly and the curved portions under tension tend to straighten out,thus decreasing the eliiciency of the bolster.

l. Abolster of the character described comprising Atwo membersfof'duplicated con-r struction o having` interengaging vertically 'disposedintegral means adapted to prevent relative sliding mOVQIIlQDl?therebetween, vsubstantially as speciied. Y l

Sv2. A- bolsterof the character described l.comprising two steel"castings ofduplicated construction rigidly secured together and each ofwhich isprovided with an integral lmember forming l part of a sidebearing bracket, substantial .A bolster` of the character describedcomprising two steelvmembers of likeconstructionadapted to be molded andcast .from thesame pattern, .said Vmembers having anges-attheir endsprovided with vertically arrangedl alternating interengaging iprojections, substantiallyias speeied.

speci ed.

l 4.1Aubolster formilwayI car trucks kcomprising two steel cast-ings oflike construction Veach ofwhichis substantially channel- `shaped ,incross section,said members being ,arranged :with the llanges extendinghorizontally, theup'per and lowerrianges having ati their ends,alternately arranged interen-aging projections, substantially as.provided with flanges at its` ends having inrisindtwofsteellchannel shae castin s ar` c Y l Y "fienile-s"cf'this p-atentjmaybe obtained forl vecents each, by addressing the Washington, D. C.

ranged with the flanges thereof extending horizontally, mterengagmgprojections on said castings, and means passing through the webs of saidcastings for'holding said proJections in interengagement, substantiallyas specified.

` 7. A bolster for railway car trucks comprising two steelchannel-shaped castings arranged with the flanges thereof disposedhorizontally and 'extending toward each other, said flanges havinginterengaging projections beveled `in elevation and in plan,substantially as specified.

8. A bolster for railway car trucks comprising two channel-shapedmembers arrangedwith the flanges thereof extending toward each other andhaving interengaging projections tending to wedge the flano'es of o nemember between the flanges of the other. v

9. bolster for railway car trucks Colnprising two channel-shaped membersar- 1'. nged withl the tianges thereof disposed horizontally andextending toward each other, saidtlanges having interengaging survfacestending to wedge the flanges of one member between the flanges of theother.

*10. A bolster for railway car trucks comprising two steel channelshaped castings arranged with the flanges thereof disposed horizontallyand extending toward each other, their adjacent edges being formed tointerengage, and internal integral struts extending between the flangesof each member, substantially as specified.

Signed this llth day of February, 1914, in the presence 0f twowitnesses.

JOHN F. OCONNOR.

'Witnesses WILLIAM A. GEIGER,

JOSEPH HARRIS.

Commissioner of Patents,

